A statement from the English Premier League said an independent commission found that the club had arranged "sham" contracts and agreements to artificially inflate its revenues and reduce its costs.
The Premier League confirms that Manchester City have been found guilty of all charges related to breaches of Premier League financial rules between 2009-10 and 2017-18.
Former Tottenham and Chelsea manager Mauricio Pochettino says it is "impossible to turn back time" after Manchester City were found guilty of financial breaches.
Manchester City chief executive Ferran Soriano issues a defiant message to other club executives about the club being found guilty of a majority of Premier League charges, BBC Sport has been told.